mmotm 2021-05-10-21-46 uploaded

mmotm 2021-05-10-21-46 uploaded

[akpm]

The mm-of-the-moment snapshot 2021-05-10-21-46 has been uploaded to

   https://www.ozlabs.org/~akpm/mmotm/

mmotm-readme.txt says

README for mm-of-the-moment:

https://www.ozlabs.org/~akpm/mmotm/

This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
more than once a week.

You will need quilt to apply these patches to the latest Linus release (5.x
or 5.x-rcY).  The series file is in broken-out.tar.gz and is duplicated in
https://ozlabs.org/~akpm/mmotm/series

The file broken-out.tar.gz contains two datestamp files: .DATE and
.DATE-yyyy-mm-dd-hh-mm-ss.  Both contain the string yyyy-mm-dd-hh-mm-ss,
followed by the base kernel version against which this patch series is to
be applied.

This tree is partially included in linux-next.  To see which patches are
included in linux-next, consult the `series' file.  Only the patches
within the #NEXT_PATCHES_START/#NEXT_PATCHES_END markers are included in
linux-next.


A full copy of the full kernel tree with the linux-next and mmotm patches
already applied is available through git within an hour of the mmotm
release.  Individual mmotm releases are tagged.  The master branch always
points to the latest release, so it's constantly rebasing.

	https://github.com/hnaz/linux-mm

The directory https://www.ozlabs.org/~akpm/mmots/ (mm-of-the-second)
contains daily snapshots of the -mm tree.  It is updated more frequently
than mmotm, and is untested.

A git copy of this tree is also available at

	https://github.com/hnaz/linux-mm



This mmotm tree contains the following patches against 5.13-rc1:
(patches marked "*" will be included in linux-next)

  origin.patch
* mm-hugetlb-fix-f_seal_future_write.patch
* mm-hugetlb-fix-cow-where-page-writtable-in-child.patch
* mm-slub-move-slub_debug-static-key-enabling-outside-slab_mutex.patch
* revert-mm-gup-check-page-posion-status-for-coredump.patch
* squashfs-fix-divide-error-in-calculate_skip.patch
* userfaultfd-release-page-in-error-path-to-avoid-bug_on.patch
* ksm-revert-use-get_ksm_page_nolock-to-get-ksm-page-in-remove_rmap_item_from_tree.patch
* mm-ioremap-fix-iomap_max_page_shift.patch
* mm-fix-struct-page-layout-on-32-bit-systems.patch
* kasan-fix-unit-tests-with-config_ubsan_local_bounds-enabled.patch
* mm-filemap-fix-readahead-return-types.patch
* hfsplus-prevent-corruption-in-shrinking-truncate.patch
* ipc-mqueue-msg-sem-avoid-relying-on-a-stack-reference-past-its-expiry.patch
* docs-admin-guide-update-description-for-kernelmodprobe-sysctl.patch
* proc-kpageflags-prevent-an-integer-overflow-in-stable_page_flags.patch
* proc-kpageflags-do-not-use-uninitialized-struct-pages.patch
* ia64-headers-drop-duplicated-words.patch
* makefile-extend-32b-aligned-debug-option-to-64b-aligned.patch
* streamline_configpl-make-spacing-consistent.patch
* streamline_configpl-add-softtabstop=4-for-vim-users.patch
* ocfs2-clear-links-count-in-ocfs2_mknod-if-an-error-occurs.patch
* ocfs2-fix-ocfs2-corrupt-when-iputting-an-inode.patch
* kernel-watchdog-modify-the-explanation-related-to-watchdog-thread.patch
* doc-watchdog-modify-the-explanation-related-to-watchdog-thread.patch
* doc-watchdog-modify-the-doc-related-to-watchdog-%u.patch
  mm.patch
* tools-vm-page_owner_sortc-fix-the-potential-stack-overflow-risk.patch
* mm-page-writeback-kill-get_writeback_state-comments.patch
* mm-page-writeback-fix-performance-when-bdis-share-of-ratio-is-0.patch
* mm-gup_benchmark-support-threading.patch
* mm-gup-allow-foll_pin-to-scale-in-smp.patch
* mm-gup-pack-has_pinned-in-mmf_has_pinned.patch
* mm-gup-pack-has_pinned-in-mmf_has_pinned-checkpatch-fixes.patch
* mm-swapfile-use-percpu_ref-to-serialize-against-concurrent-swapoff.patch
* swap-fix-do_swap_page-race-with-swapoff.patch
* mm-swap-remove-confusing-checking-for-non_swap_entry-in-swap_ra_info.patch
* mm-shmem-fix-shmem_swapin-race-with-swapoff.patch
* mm-memcg-move-mod_objcg_state-to-memcontrolc.patch
* mm-memcg-cache-vmstat-data-in-percpu-memcg_stock_pcp.patch
* mm-memcg-improve-refill_obj_stock-performance.patch
* mm-memcg-optimize-user-context-object-stock-access.patch
* mm-memcg-optimize-user-context-object-stock-access-checkpatch-fixes.patch
* mm-memcg-slab-properly-set-up-gfp-flags-for-objcg-pointer-array.patch
* mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches.patch
* mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-fix.patch
* mm-memcg-slab-disable-cache-merging-for-kmalloc_normal-caches.patch
* mm-memcontrol-fix-root_mem_cgroup-charging.patch
* mm-memcontrol-fix-page-charging-in-page-replacement.patch
* mm-memcontrol-bail-out-early-when-mm-in-get_mem_cgroup_from_mm.patch
* mm-memcontrol-remove-the-pgdata-parameter-of-mem_cgroup_page_lruvec.patch
* mm-memcontrol-simplify-lruvec_holds_page_lru_lock.patch
* mm-memcontrol-rename-lruvec_holds_page_lru_lock-to-page_matches_lruvec.patch
* mm-memcontrol-simplify-the-logic-of-objcg-pinning-memcg.patch
* mm-memcontrol-move-obj_cgroup_uncharge_pages-out-of-css_set_lock.patch
* mm-vmscan-remove-noinline_for_stack.patch
* mm-improve-mprotectrw-efficiency-on-pages-referenced-once.patch
* mm-improve-mprotectrw-efficiency-on-pages-referenced-once-fix.patch
* perf-map_executable-does-not-indicate-vm_mayexec.patch
* binfmt-remove-in-tree-usage-of-map_executable.patch
* mm-ignore-map_executable-in-ksys_mmap_pgoff.patch
* mm-mmapc-logic-of-find_vma_intersection-repeated-in-__do_munmap.patch
* mm-mmap-introduce-unlock_range-for-code-cleanup.patch
* mm-mmap-introduce-unlock_range-for-code-cleanup-fix.patch
* mm-mmap-use-find_vma_intersection-in-do_mmap-for-overlap.patch
* mm-vmalloc-switch-to-bulk-allocator-in-__vmalloc_area_node.patch
* mm-vmalloc-print-a-warning-message-first-on-failure.patch
* printk-introduce-dump_stack_lvl.patch
* kasan-use-dump_stack_lvlkern_err-to-print-stacks.patch
* mm-page_alloc-__alloc_pages_bulk-do-bounds-check-before-accessing-array.patch
* mm-mmzoneh-simplify-is_highmem_idx.patch
* mm-make-__dump_page-static.patch
* mm-debug-factor-pagepoisoned-out-of-__dump_page.patch
* mm-page_owner-constify-dump_page_owner.patch
* mm-make-compound_head-const-preserving.patch
* mm-constify-get_pfnblock_flags_mask-and-get_pfnblock_migratetype.patch
* mm-constify-page_count-and-page_ref_count.patch
* mm-optimise-nth_page-for-contiguous-memmap.patch
* mm-memory_hotplug-factor-out-bootmem-core-functions-to-bootmem_infoc.patch
* mm-hugetlb-introduce-a-new-config-hugetlb_page_free_vmemmap.patch
* mm-hugetlb-gather-discrete-indexes-of-tail-page.patch
* mm-hugetlb-free-the-vmemmap-pages-associated-with-each-hugetlb-page.patch
* mm-hugetlb-defer-freeing-of-hugetlb-pages.patch
* mm-hugetlb-alloc-the-vmemmap-pages-associated-with-each-hugetlb-page.patch
* mm-hugetlb-add-a-kernel-parameter-hugetlb_free_vmemmap.patch
* mm-memory_hotplug-disable-memmap_on_memory-when-hugetlb_free_vmemmap-enabled.patch
* mm-memory_hotplug-disable-memmap_on_memory-when-hugetlb_free_vmemmap-enabled-fix.patch
* mm-hugetlb-introduce-nr_free_vmemmap_pages-in-the-struct-hstate.patch
* mm-debug_vm_pgtable-move-pmd-pud_huge_tests-out-of-config_transparent_hugepage.patch
* mm-debug_vm_pgtable-remove-redundant-pfn_pmd-pte-and-fix-one-comment-mistake.patch
* userfaultfd-selftests-use-user-mode-only.patch
* userfaultfd-selftests-remove-the-time-check-on-delayed-uffd.patch
* userfaultfd-selftests-dropping-verify-check-in-locking_thread.patch
* userfaultfd-selftests-only-dump-counts-if-mode-enabled.patch
* userfaultfd-selftests-unify-error-handling.patch
* mm-thp-simplify-copying-of-huge-zero-page-pmd-when-fork.patch
* mm-userfaultfd-fix-uffd-wp-special-cases-for-fork.patch
* mm-userfaultfd-fix-a-few-thp-pmd-missing-uffd-wp-bit.patch
* mm-userfaultfd-fail-uffd-wp-registeration-if-not-supported.patch
* mm-pagemap-export-uffd-wp-protection-information.patch
* userfaultfd-selftests-add-pagemap-uffd-wp-test.patch
* userfaultfd-hugetlbfs-avoid-including-userfaultfd_kh-in-hugetlbh.patch
* userfaultfd-shmem-combine-shmem_mcopy_atomicmfill_zeropage_pte.patch
* userfaultfd-shmem-support-minor-fault-registration-for-shmem.patch
* userfaultfd-shmem-support-uffdio_continue-for-shmem.patch
* userfaultfd-shmem-advertise-shmem-minor-fault-support.patch
* userfaultfd-shmem-modify-shmem_mfill_atomic_pte-to-use-install_pte.patch
* userfaultfd-selftests-use-memfd_create-for-shmem-test-type.patch
* userfaultfd-selftests-create-alias-mappings-in-the-shmem-test.patch
* userfaultfd-selftests-reinitialize-test-context-in-each-test.patch
* userfaultfd-selftests-exercise-minor-fault-handling-shmem-support.patch
* mm-move-holes_in_zone-into-mm.patch
* docs-procrst-meminfo-briefly-describe-gaps-in-memory-accounting.patch
* mm-thp-make-alloc_split_ptlocks-dependent-on-use_split_pte_ptlocks.patch
* mm-thp-relax-the-vm_denywrite-constraint-on-file-backed-thps.patch
* nommu-remove-__gfp_highmem-in-vmalloc-vzalloc.patch
* nommu-remove-__gfp_highmem-in-vmalloc-vzalloc-checkpatch-fixes.patch
* mm-make-variable-names-for-populate_vma_page_range-consistent.patch
* mm-madvise-introduce-madv_populate_readwrite-to-prefault-page-tables.patch
* mm-madvise-introduce-madv_populate_readwrite-to-prefault-page-tables-checkpatch-fixes.patch
* maintainers-add-tools-testing-selftests-vm-to-memory-management.patch
* selftests-vm-add-protection_keys_32-protection_keys_64-to-gitignore.patch
* selftests-vm-add-test-for-madv_populate_readwrite.patch
* mm-memory_hotplug-rate-limit-page-migration-warnings.patch
* mm-highmem-remove-deprecated-kmap_atomic.patch
* mm-fix-typos-and-grammar-error-in-comments.patch
* mm-fix-comments-mentioning-i_mutex.patch
* info-task-hung-in-generic_file_write_iter.patch
* info-task-hung-in-generic_file_write-fix.patch
* kernel-hung_taskc-monitor-killed-tasks.patch
* procfs-allow-reading-fdinfo-with-ptrace_mode_read.patch
* procfs-dmabuf-add-inode-number-to-proc-fdinfo.patch
* proc-sysctl-make-protected_-world-readable.patch
* lib-decompress_bunzip2-remove-an-unneeded-semicolon.patch
* lib-string_helpers-switch-to-use-bit-macro.patch
* lib-string_helpers-move-escape_np-check-inside-else-branch-in-a-loop.patch
* lib-string_helpers-drop-indentation-level-in-string_escape_mem.patch
* lib-string_helpers-introduce-escape_na-for-escaping-non-ascii.patch
* lib-string_helpers-introduce-escape_nap-to-escape-non-ascii-and-non-printable.patch
* lib-string_helpers-allow-to-append-additional-characters-to-be-escaped.patch
* lib-test-string_helpers-print-flags-in-hexadecimal-format.patch
* lib-test-string_helpers-get-rid-of-trailing-comma-in-terminators.patch
* lib-test-string_helpers-add-test-cases-for-new-features.patch
* maintainers-add-myself-as-designated-reviewer-for-generic-string-library.patch
* seq_file-introduce-seq_escape_mem.patch
* seq_file-add-seq_escape_str-as-replica-of-string_escape_str.patch
* seq_file-convert-seq_escape-to-use-seq_escape_str.patch
* nfsd-avoid-non-flexible-api-in-seq_quote_mem.patch
* seq_file-drop-unused-_escape_mem_ascii.patch
* bitmap_parse-support-all-semantics.patch
* rcu-tree_plugin-dont-handle-the-case-of-all-cpu-range.patch
* checkpatch-scripts-spdxcheckpy-now-requires-python3.patch
* hfsplus-fix-out-of-bounds-warnings-in-__hfsplus_setxattr.patch
* x86-signal-dont-do-sas_ss_reset-until-we-are-certain-that-sigframe-wont-be-abandoned.patch
* aio-simplify-read_events.patch
* ipc-sem-use-kvmalloc-for-sem_undo-allocation.patch
* ipc-use-kmalloc-for-msg_queue-and-shmid_kernel.patch
  linux-next.patch
* mm-define-default-value-for-first_user_address.patch
* mmap-make-mlock_future_check-global.patch
* riscv-kconfig-make-direct-map-manipulation-options-depend-on-mmu.patch
* set_memory-allow-set_direct_map__noflush-for-multiple-pages.patch
* set_memory-allow-querying-whether-set_direct_map_-is-actually-enabled.patch
* mm-introduce-memfd_secret-system-call-to-create-secret-memory-areas.patch
* mm-introduce-memfd_secret-system-call-to-create-secret-memory-areas-fix.patch
* mm-introduce-memfd_secret-system-call-to-create-secret-memory-areas-fix-2.patch
* mm-introduce-memfd_secret-system-call-to-create-secret-memory-areas-fix-3.patch
* pm-hibernate-disable-when-there-are-active-secretmem-users.patch
* arch-mm-wire-up-memfd_secret-system-call-where-relevant.patch
* arch-mm-wire-up-memfd_secret-system-call-where-relevant-fix.patch
* secretmem-test-add-basic-selftest-for-memfd_secret2.patch
* secretmem-test-add-basic-selftest-for-memfd_secret2-fix.patch
* buildid-only-consider-gnu-notes-for-build-id-parsing.patch
* buildid-add-api-to-parse-build-id-out-of-buffer.patch
* buildid-stash-away-kernels-build-id-on-init.patch
* dump_stack-add-vmlinux-build-id-to-stack-traces.patch
* module-add-printk-formats-to-add-module-build-id-to-stacktraces.patch
* module-add-printk-formats-to-add-module-build-id-to-stacktraces-fix.patch
* arm64-stacktrace-use-%psb-for-backtrace-printing.patch
* x86-dumpstack-use-%psb-%pbb-for-backtrace-printing.patch
* scripts-decode_stacktracesh-support-debuginfod.patch
* scripts-decode_stacktracesh-silence-stderr-messages-from-addr2line-nm.patch
* scripts-decode_stacktracesh-indicate-auto-can-be-used-for-base-path.patch
* buildid-mark-some-arguments-const.patch
* buildid-fix-kernel-doc-notation.patch
* kdump-use-vmlinux_build_id-to-simplify.patch
  make-sure-nobodys-leaking-resources.patch
  releasing-resources-with-children.patch
  mutex-subsystem-synchro-test-module.patch
  kernel-forkc-export-kernel_thread-to-modules.patch
  workaround-for-a-pci-restoring-bug.patch

Re: mmotm 2021-05-10-21-46 uploaded (mm/*)

[Randy Dunlap]

On 5/10/21 9:47 PM, akpm@linux-foundation.org wrote:
> The mm-of-the-moment snapshot 2021-05-10-21-46 has been uploaded to
> 
>    https://www.ozlabs.org/~akpm/mmotm/
> 
> mmotm-readme.txt says
> 
> README for mm-of-the-moment:
> 
> https://www.ozlabs.org/~akpm/mmotm/
> 
> This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
> more than once a week.
> 
> You will need quilt to apply these patches to the latest Linus release (5.x
> or 5.x-rcY).  The series file is in broken-out.tar.gz and is duplicated in
> https://ozlabs.org/~akpm/mmotm/series
> 
> The file broken-out.tar.gz contains two datestamp files: .DATE and
> .DATE-yyyy-mm-dd-hh-mm-ss.  Both contain the string yyyy-mm-dd-hh-mm-ss,
> followed by the base kernel version against which this patch series is to
> be applied.
> 
> This tree is partially included in linux-next.  To see which patches are
> included in linux-next, consult the `series' file.  Only the patches
> within the #NEXT_PATCHES_START/#NEXT_PATCHES_END markers are included in
> linux-next.
> 
> 
> A full copy of the full kernel tree with the linux-next and mmotm patches
> already applied is available through git within an hour of the mmotm
> release.  Individual mmotm releases are tagged.  The master branch always
> points to the latest release, so it's constantly rebasing.
> 
> 	https://github.com/hnaz/linux-mm
> 
> The directory https://www.ozlabs.org/~akpm/mmots/ (mm-of-the-second)
> contains daily snapshots of the -mm tree.  It is updated more frequently
> than mmotm, and is untested.
> 
> A git copy of this tree is also available at
> 
> 	https://github.com/hnaz/linux-mm


Lots of various mm/ build errors:

Many of:
In file included from ../arch/x86/kvm/../../../virt/kvm/kvm_main.c:47:0:
../include/linux/hugetlb.h:340:30: error: parameter 6 (‘mode’) has incomplete type
       enum mcopy_atomic_mode mode,
                              ^~~~
../include/linux/hugetlb.h:335:19: error: function declaration isn’t a prototype [-Werror=strict-prototypes]
 static inline int hugetlb_mcopy_atomic_pte(struct mm_struct *dst_mm,
                   ^~~~~~~~~~~~~~~~~~~~~~~~


Many of:
../mm/slab_common.c:754:8: error: array index in initializer exceeds array bounds
  .name[KMALLOC_RECLAIM] = "kmalloc-rcl-" #__short_size, \
        ^
../mm/slab_common.c:766:2: note: in expansion of macro ‘INIT_KMALLOC_INFO’
  INIT_KMALLOC_INFO(0, 0),
  ^~~~~~~~~~~~~~~~~
../mm/slab_common.c:754:8: note: (near initialization for ‘kmalloc_info[0].name’)
  .name[KMALLOC_RECLAIM] = "kmalloc-rcl-" #__short_size, \
        ^
../mm/slab_common.c:766:2: note: in expansion of macro ‘INIT_KMALLOC_INFO’
  INIT_KMALLOC_INFO(0, 0),
  ^~~~~~~~~~~~~~~~~

One of:
In file included from <command-line>:0:0:
In function ‘__mm_zero_struct_page.isra.96’,
    inlined from ‘__init_single_page.isra.97’ at ../mm/page_alloc.c:1494:2,
    inlined from ‘init_unavailable_range.isra.98’ at ../mm/page_alloc.c:6496:3:
./../include/linux/compiler_types.h:328:38: error: call to ‘__compiletime_assert_253’ declared with attribute error: BUILD_BUG_ON failed: sizeof(struct page) > 80
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                                      ^
./../include/linux/compiler_types.h:309:4: note: in definition of macro ‘__compiletime_assert’
    prefix ## suffix();    \
    ^~~~~~
./../include/linux/compiler_types.h:328:2: note: in expansion of macro ‘_compiletime_assert’
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
  ^~~~~~~~~~~~~~~~~~~
../include/linux/build_bug.h:39:37: note: in expansion of macro ‘compiletime_assert’
 #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                     ^~~~~~~~~~~~~~~~~~
../include/linux/build_bug.h:50:2: note: in expansion of macro ‘BUILD_BUG_ON_MSG’
  BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
  ^~~~~~~~~~~~~~~~
../include/linux/mm.h:169:2: note: in expansion of macro ‘BUILD_BUG_ON’
  BUILD_BUG_ON(sizeof(struct page) > 80);
  ^~~~~~~~~~~~


-- 
~Randy
Reported-by: Randy Dunlap <rdunlap@infradead.org>

Re: mmotm 2021-05-10-21-46 uploaded (mm/*)

[Andrew Morton]

On Tue, 11 May 2021 12:39:00 -0700 Randy Dunlap <rdunlap@infradead.org> wrote:

> Lots of various mm/ build errors:

Huh, It Worked For Me (tm).   Can you please share the .config?

Re: mmotm 2021-05-10-21-46 uploaded (mm/*)

[Randy Dunlap]

[-- Attachment #1: Type: text/plain, Size: 1563 bytes --]

On 5/11/21 1:47 PM, Andrew Morton wrote:
> On Tue, 11 May 2021 12:39:00 -0700 Randy Dunlap <rdunlap@infradead.org> wrote:
> 
>> Lots of various mm/ build errors:
> 
> Huh, It Worked For Me (tm).   Can you please share the .config?
> 

configs (plural). All of them are randconfigs. All on x86_64.


mm/slab_common.c:754:8: error: array index in initializer exceeds array bounds
config-r9247

../include/linux/hugetlb.h:340:30: error: parameter 6 (‘mode’) has incomplete type
../include/linux/hugetlb.h:335:19: error: function declaration isn’t a prototype [-Werror=strict-prototypes]
config-r9251

../include/linux/kernel.h:53:43: error: dereferencing pointer to incomplete type ‘struct module’
../include/linux/build_bug.h:78:41: error: static assertion failed: "sizeof(typeof_member(struct module, build_id)) == 20"
config-r9253


../include/linux/compiler_types.h:328:38: error: call to ‘__compiletime_assert_253’ declared with attribute error: BUILD_BUG_ON failed: sizeof(struct page) > 80
config-r9254


The randconfig files are attached.

I have been wondering lately if I could just tell you/other people the
randconfig SEED that was used and then you/other people could just use
that SEED to reproduce the randconfig file(s).
Are rand() and srand() stable across GCC versions and h/w platforms?

config-r9247:KCONFIG_SEED=0x7ABE8042
config-r9251:KCONFIG_SEED=0x67B989AA
config-r9253:KCONFIG_SEED=0x7B3D63BE
config-r9254:KCONFIG_SEED=0x331557C5


Usage:
KCONFIG_SEED=0x331557C5 make [ARCH=x86_64] [O=builddir] randconfig

thanks.
-- 
~Randy


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